<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>Insert title here</title>
	</head>
	<body>
	<input type="button" value="按钮">
		<script type="text/javascript" src="../js/jquery-1.4.2.min.js"></script>
		<script type="text/javascript">
		$("input").click(function(){
			alert("xxx");
		})
			setTimeout(function(){
				$("input").trigger("click")
			},5000);
		</script>
	</body>
</html>